Flint was born Homer Eon Flindt. He was a pulp fiction author who wrote some SF, including The Blind Spot (with Austin Hall).

Other SF books by Flint were The Devolutionist and the Emancipatrix (Ace, 1965) and The Lord of Death and the Queen of Life (Ace, 1965). The stories in both books were originally written for pulp magazines nearly 50 years before they saw book publication.